Name solid shapes7/23/2023 Imported Solid ShapesĪlternatively, you can use a File Solid block to import a solid from an external geometry file. The same rule applies to extruded shapes, with one distinction: the cross-section coordinates are ( x, y) pairs and the cross-section lies in the xy plane. Foremost among these is the requirement that, as you proceed from one point in the coordinate matrix to the next, the solid region lie to your left and the empty (or hollow) region to your right. To consistently generate a valid shape without errors, the Revolved Solid block enforces a few rules. The Revolved Solid block generates the revolved shape by sweeping the specified xz cross-section about the z-axis. Ignore the relative placement of the solid in the (still incomplete) model. Visualize the solid in the visualization pane of the Revolved Solid block. Use the Revolved Solid block to model a solid of revolution-a cone with a height of 5 ft and a base radius also of 5 ft. To learn more about these shapes, see Modeling Extrusions and Revolutions. For greater versatility, the preset shapes include the Extruded Solid block and Revolved Solid block-shapes whose cross-sections, be they along or about an axis, you can modify. Preset shapes make it possible to quickly model spherical, cylindrical, and prismatic solids, among others. Solid blocks provides a sizeable array of preset shapes-those with simple parameterizations featuring readily accessible parameters, such as Radius and Length, as inputs. To learn how to create frames using this interface, see Creating Custom Solid Frames. You can use this interface to append and align new frames to select geometry features, such as vertices, edges, faces, and volumes. To learn more about frames and transforms, see Working with Frames.įor ease of modeling, the solid blocks provide a frame creation interface. You can rotate and translate two frames with respect to one another by applying operations called rigid transforms between those frames. Specifying spatial relationships such as this is key to modeling in the Simscape Multibody environment. Ignore the relative placement of the solid in the (incomplete) model. Visualize the solid in the visualization pane of the Cylindrical Solid block. Use the Cylindrical Solid block to model a body with a simple preset shape-a cylinder with a radius of 5 cm and a length of 20 cm. Try It: Specify a Simple Cylindrical Shape If you want to visualize solids and bodies, or benefit from the automatic inertia calculations that solid geometry enables, you must use a solid block. The Spline block adds a plane or space curve largely intended for use with the Point on Curve Constraint block. The Graphic block merely adds a marker to a frame, typically as a means of highlighting that frame. The Graphic and Spline blocks represent geometries-and provide a visualization means for those geometries-but neither is an adequate replacement for an actual solid geometry. There is no equivalent, dedicated block for solid geometry. The latter are attributes that you can model in isolation using blocks such as Rigid Transform and Inertia. ![]() Solid geometry differs in a practical way from frames and inertia.
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